Handle relocation of ParachainHost in Polkadot (#1108)

* Handle relocation of `ParachainHost` in Polkadot

`ParachainHost` is no longer versioned and is in `runtime_api` module.

This is a companion for
https://github.com/paritytech/polkadot/pull/5048

* Update dependencies

client/relay-chain-inprocess-interface/src/lib.rs

@@ -19,10 +19,8 @@ use std::{pin::Pin, sync::Arc, time::Duration};
 use async_trait::async_trait;
 use cumulus_primitives_core::{
 	relay_chain::{
-		v2::{
-			CommittedCandidateReceipt, OccupiedCoreAssumption, ParachainHost, SessionIndex,
-			ValidatorId,
-		},
+		runtime_api::ParachainHost,
+		v2::{CommittedCandidateReceipt, OccupiedCoreAssumption, SessionIndex, ValidatorId},
 		Block as PBlock, BlockId, Hash as PHash, Header as PHeader, InboundHrmpMessage,
 	},
 	InboundDownwardMessage, ParaId, PersistedValidationData,

primitives/core/src/lib.rs

@@ -35,7 +35,7 @@ pub use polkadot_primitives::v2::{
 /// A module that re-exports relevant relay chain definitions.
 pub mod relay_chain {
 	pub use polkadot_core_primitives::*;
-	pub use polkadot_primitives::{v2, v2::well_known_keys};
+	pub use polkadot_primitives::{runtime_api, v2, v2::well_known_keys};
 }
 
 /// An inbound HRMP message.